# Import the necessary Verse libraries for interacting with the game world
using { /Fortnite.com/Devices }
using { /UnrealEngine.com/Temporary/Schemas }

# Define our Device. This is like creating a new "Item" in Creative.
# It will sit in the center of our arena.
Ancient Altar Device := class(creative_device):
    # This is a "Variable" - a container that changes.
    # Think of it like a player's HP bar. It starts at 0 (dark) and goes to 1 (glowing).
    AltarGlowAmount : float = 0.0

    # This is an "Event" - something that happens in the game.
    # Like a "Elimination" event, this triggers when a player enters the device's zone.
    OnPlayerEnter := event(player: player):
        # Find the "Altar Prop" in our Scene Graph.
        # We use the Hierarchy to find the specific entity named "Central Altar".
        altar_prop := GetEntity("Central Altar")

        if (altar_prop != none):
            # Get the "Visual" component of the prop.
            # This is like checking the player's skin.
            visual := GetVisual(altar_prop)

            # Change the "Emissive" (glow) intensity.
            # We set it to 1.0, which means "full glow."
            # This is like switching a player's health from 0 to 100.
            SetEmissiveIntensity(visual, 1.0)

            # Update our variable to reflect the new state.
            AltarGlowAmount = 1.0

    # This event triggers when a player leaves.
    OnPlayerExit := event(player: player):
        altar_prop := GetEntity("Central Altar")
        if (altar_prop != none):
            visual := GetVisual(altar_prop)
            # Turn off the glow (set to 0.0).
            # Like a player dying, the glow "dies" too.
            SetEmissiveIntensity(visual, 0.0)
            AltarGlowAmount = 0.0